NDB2LM-63

1、Applicable scope and purpose Short circuit protection

Overload protection Isolation

Earth leakage

NDB2LM-63 series residual current protection module is used for protecting earth leakage, director indirect electric-shock on body and applied in low-voltage terminal distribution field, including

Industry, Civil Building, Energy, Communication and Infrastructure etc.

2、Model and implication：

• electric parameter
• frequency:50/60Hz
• Rated working voltage: AC230/240V (1P+N,2P) AC400/415V (3P,3P+N,4P)
  :AC110/120V(1P+N,2P)
• Rated impulse withstand voltage:4kV
• Rated insulation voltage:500V
• Residual operating current type: A、AC
• Instantaneous tripping characteristic: B、C、D
• Rated current: 1A，2A，3A，4A，5A，6A,10A,16A,20A,25A,32A,40A,50A,63A
• Rated breaking capacity: 10kA
• Rated residual operating current: 30mA,100mA,300mA(regular);100mA,300mA(with time-delay)
• level of sensitivity: Plain (not labeled), time delay (S)
• Isolation function
• Leakage is visible
• Wiring
• Tunnel type of wiring terminal
• Connection area:1mm2～35mm2
• Tighten screw torque: 3.5 N.M
• Protection requirements
• Protection grade:IP20
• Protection grade for device which is installed in distribution box:IP40 5、Normal working environment
• Height: ≤2000m, if you want to apply it more than 2000m, you must refer to Miniature Circuit Breaker’s reduced capacity table. Also you can refer to GB/T20645 the technological requirement of the low-voltage electrical equipment when it is usedon high altitude.
• pollution degree:3
• Ambient temperature:-25℃～+60℃
• Stored ambient temperature: -40℃～+80℃
• Humidity requirement: relative humidity under 40℃≤ 50%;
• Magnetic requirement: magnetic field should be 5 times less than geomagnetic field in any directions
• Sine wave distortion: le20s20s.0t4h.a29n 5%
• Tolerate the influence of 试sa制lt mist and oil mist
• Used in the place without explosion danger and the medium can’t have the corrosive action on metals and damage the insulation gas and conductive dust.
• Used in the place without rain and snow.

4、 Tripping characteristic

• B type curve
• protect the non-inductive or micro-sense circuit
• rated current: 1A～63A
• tripping characteristic: instantaneous tripping range is 3In～5In

• C type curve
• protect normal load and distribution wire cable
• rated current: 1A～63A
• tripping characteristic: instantaneous tripping range is 5In～10In

• D type
• protect industrial distribution system
• rated current: 1A～63A
• tripping characteristic: instantaneous tripping range is 10In～14In

5、Outline and installation dimensions

1P+N

2P

3P

3P+N

4P

6、Installation Method

Installed in TH35mm x 7.5 standard guide rail and wired in tunnel type.

7、Packaging and storage

1P+N: 4pcs per box; 2P:3 pcs per box, 3P: 2pcs per box, 3P+N or 4P:1 pcs per box. Packing cartons should be stored where air circulation and relative humidity is not more than 50% and the tempera20t2u0r.e04.i2s9 not higher than + 80℃ and not less than – 40℃, and also  without  acidic alkaline  and  other  corrosive  gas. In  the  above  conditions, the

storage period since the production date is not more than three years.

8、Accessories list and installation

• OF2 auxiliary contact: mount on the left side of MCB to indicate the tripping status of the associated MCB.
• SD2 alarm contact: mount on the left side of MCB to indicate the fault tripping status of the associated MCB
• MX+OF2 shunt tripping device: mount on the left side of MCB to remotely control MCB
• NGQ2（A）Undervoltage tripping device: mount on the left side of MCB,  realize single-phase overvoltage, undervoltage, under-voltage protection function
• Tm2 electric operating mechanism：mount on the left side of MCB to breaker on-off control
• Tm2GQ Since multiple undervoltage: mount on the left side of MCB ,when in the light over-voltage or under-voltage, on line protection

9、Environmental protection requirement Conform to RoHS directive

10、Notice

• No responsibility for problems caused by disassembling privately;
• RCD can’t provide protection in the cases that touch two phase line synchronously;
• Please don’t perform insulating resistance test or voltage-withstand test on the product

directly or indirectly by megohmmeter or similar test devices. If you need, we can offer validated proof regarding this item;

• When testing insulating resistance of the engineering circuit, the RCD should not be connected to avoid misunderstanding on the products’ quality or damage its PCB;
• Please make sure reliable connection to avoid fault tripping or damage of terminals caused by exceptional heat;
• Simulating test should be made once a month by pressing the test button to check whether the circuit breaker works normally. If RCD is abnormal, it should be replaced.
• If the RCD trip automatically, you must timely analyze the fault reason of the line or the device.